It's a problem to rent a flat because there are many hotels in the town.

Nice idea. Your sentence is understandable but a bit awkward. Here are some smoother alternatives you can use, depending on the tone you want: - It is difficult to rent a flat because there are many hotels in town. - Finding a flat to rent is difficult, given the number of hotels in town. - The abundance of hotels in town makes renting a flat challenging. - There are too many hotels in town, which makes it hard to rent a flat. Notes: - Use “in town” rather than “in the town” for a more natural sound in most contexts. - “It’s a problem to rent a flat” sounds odd; “It’s difficult to rent a flat” or “Finding a flat to rent is difficult” flows better. If you want a formal option for an essay: “The presence of numerous hotels in town complicates the process of renting a flat.” Would you like me to adapt this to a specific exam style or expand it into a short paragraph?